$fractional calculus$

plot2D 制图2D

The plot2D() can plot funtion, equation, derivative, integral, differential equation, polar plot, parametric plot, animation. The independent variable must be typed as x for evaluation. The time variable must be typed as t.

x=, y =
y = 0, x =

For example,

sin(x)-cos(x)

for implicit function of x and y, sin(x-t)-y

for equation, input sin(x-t)-cos(y)=0 or sin(x-t)-cos(y)

for derivative of sin(x), tick the dy/dx: checkbox, or input diff(x=>sin(x-t),x)

for second order derivative of sin(x), tick the dy/dx: checkbox, or input diff(x=>sin(x-t),x,2)

for differential equation or integral, the initial value y(0) at x=0 is the t value, tick the y'= checkbox, or input ds(y,x,1)=cos(x)

for polar plot x from the -Axis to Axis value, tick the polar: checkbox, or input r=x-t

for polar plot x from 0 to the Axis value, tick the x>0: checkbox, or input r=x-t

for parametric plot, input sin(x-t),cos(x)

for animation, input sin(x), then tick the auto Axis: button; or add the time t variable, input sin(x-t), then click the auto t: checkbox; or add the timer(t) function and change animation speed by the different t value, input sin(x-timer(t))